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Property From a Private Collector
126 . Greubel Forsey
A fine and very rare white gold limited edition 30 degree double tourbillon wristwatch with power reserve , original certificate and fitted presentation box
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Manufacturer Greubel Forsey Year Circa 2006
Movement No . 0654 Case No . 00 β 653 Model Name Double Tourbillon 30 Β° Material 18k white gold Calibre Mechanical , GF02 , 39 jewels Bracelet / Strap Black Greubel Forsey crocodile leather strap
Clasp / Buckle 18k white gold Greubel Forsey folding deployant clasp Dimensions 43.5 mm . diameter Signed
Case , dial and movement signed , case further engraved 105
Estimate HKD 1,500,000-2,500,000 USD 188,000-300,000
Accessories With Greubel Forsey Certificate of Authenticity , service receipt dated 25 December , polishing cloth , leather wallet , fitted presentation box and outer packaging .
Literature For another Double Tourbillon 30 Β°, however cased in pink gold , please Master of Contemporary Watchmaking by Michael Clerizo , page 247 .
First released in 2004 , the Double Tourbillon 30 Β° features a 30 Β° inclined tourbillon cage that revolutionised the market , especially for the manufacture of tourbillons wristwatches . The double tourbillon 30 Β° vision took more than 4 years of research and development . It features a tourbillon within a tourbillon , which permanently compensates the rate of gravity related errors . The double tourbillon is inclined at 30 Β° and is a patented tourbillon system . The inner carriage is rotating once every 60 seconds and the exterior tourbillon carriage turns in a 4 minute period . The movement showcases this extraordinary mechanism and is entirely finished with plates and bridges made of solid nickel silver . The double tourbillon today is very sought after , due to its relatively small size comparing to other tourbillons on the market .